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[" 2.A concave mirror forms an image of ...

[" 2.A concave mirror forms an image of "20" em high object "],[" on a screen placed "5*0m" away from the mirror.The "],[" height of 'the image is "50cm" .Find the focal length of "],[" the mirror and the distance between the mirror and the "],[" object."],[" A concave mirror has a focal length of "20cm." Find the "]

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